Metalworking machine



Dec' 12,- 1944 J. J. M =ca|..:n-u:v ETAL METAL WORKING MACHINE 5 sheets-sheet 1 Filed Nv. 2l, 1942 J. J. MCGLONE ETAL Dec. 12, 1.944.

METAL WORKING MACHINE' Filed Nov. 241, `1942 5 Sheets-Sheet 2 NNN lllilhllnlllflflllr..

.Sill Il N@ v MN De l2, 1944- .1. J. MGGLNE E-rAl. 2,364,734

METAL WORKING MACHINE Filed Nov. 21, 1942 5 .Sheets-Sheet 3 De 12, 1944? J. J. McGLoNE ET AL 2,364,734

METAL WORKING MACHINE Filed NOV. 21, 1942 5 Sheets-Sheet 4 Dec. 12, 1944.

J. J. MGLONE ET'AL METAL WORKING MACHINE Filed Nov. 21, 1942 5 Sheets-Sheet 5 Patented Dec. 12, 1944 UNITED STATES PATENT OFFICEv METALWORKING MACHINE John J. McGlone, Harvey, and Robert I. Anderson, Chicago, Ill., assignors to Whiting Corporation, Harvey, I ll., a corporation of Illinois Application `November 21, 1942, Serial No. 466,514

9 Claims.

end of the top arm of the structure, an upper shaft on the -head extending inwardly and downwardly at substantially a 45 angle and having its inner end disposed normally over and adjacent the outer end of the lower shaft, and-power driven mechanism including gearing and drive shafts within the structure forvconjointly .driving-the upper and lower shafts in opposite directions.

When it is desired to use a 4machine of this type for an offsetting operation, that is, to form offsets or jogs in metallic sheets or plates,l a pair of complemental, coacting offsetting rolls are mounted on the upper and lower shafts, respectively, andan offsetting gauge attachment in the form of a roller equipped bracket for the purpose of gauging ordeter-mining the position of the lofiset Aor jog with respect to ,the edges `of the work pieces is Amounted on the .bottom arm of the housing and supporting structure and adjusted to its desired gauging position relatively to the offsetting rolls. When it is desired to Kadapt the machine for carrying out a flanging operation on sheet or plate metal discs a pair of .complemental, enacting flanging rolls are Amounted on `the Yupper and lower shafts, respectively, and 4a hanging hold-down attachment in the form of a pair of arms having rollers thereon .for holding down and preventing upward bulging ofthe eentral portion of the work during drive andoperation of the iianging rolls is mountedon the bottom arm of the housing and supportini,T Structure 5 and properly adjusted with respect to the rolls.

When it is desired to use the machine for a slitting operation a pair of complemental -coacting slitting rolls are mounted on the upper .and lower shafts, respectively, and a slitting gauge attachment in the form of a rectilinear guide bar for gauging or determining the position or distance of the slit with respect to the edge of the work is mounted on the bottom arm of the housing and 4Supporting structure of .the machine and is adjusted to the desired causing position relatively to the slitting rolls.

It has vheretofore `been proposed in connection with a metal working machine ofthe type under consideration to equip each of the various attachments with a separate or independent mount for attaching or applying, it to the bottom` arm of the housing and supporting structure. In practice it has been found that with'a separate or independent mount for each attachment a great amount of time and labor is entailed in changing from one -`attachment to another connection with different uses of the machine.

One object of the invention is to provide a metal Working machine of the type and character under considerationwhich :is an improvement upon, and may be more quickly and readily converted to different uses than, previously designed machines by reason of the fact that it embodies a corn-mon mount for the offsetting gauge attachment, the

flanging hold-down attachment, and vthe slitting gauge attachment.

Another object of the invention is to provide a metal working machine of the last mentioned character in which the mount is "so designed and constructed that it is capable of supporting not only the various attachments interchangeably ,butalso two or more ofthe attachments while one is in readiness `for use, that is, in its operative position.

A further object of the invention is to provide in connection with .a metal working machine of the type under consideration. a slitting gauge attachment of new and improved form. f l

A still further object of the invention is to providea metalworking machine as herein co-Inprehended which is generally an improvement in vthe art andis characterized by .compactness as well as facility of adjustment of the various attachments. f

Other objects of the invention and the various advantages and characteristics of the present metal working machine, will be apparent from a consideration of the following detailed description.

'I'he invention consists in the several novel features which are hereinafter set forth and are more particularly dened by lclaims at the conclusion hereof.

In the drawings whichaccompany and for-m a part of this specification or disclosure and in which like numerals of reference .denote corresponding parts throughout the .severa-l views:

Figure 1 is a fragmentary side view or a metal working .machine embodying the invention showing the offsetting gauge attachment, :the hanging mount and with the offsetting gauge attachment in the position in which it is disposed when it is in use;

Figure( 2 is a iplan View of the machine, parts being broken away and other parts being shown in section for illustrative purposes.

Figure 3 is an enlarged horizontal section taken on the line 3-3 of Figure 1 and showing the offsetting gauge attachment in its operative position on the mount;

Figure 4 is an enlarged top or plan view show- Figure I is a reduced scale plan View of the slitting gauge attachment;

Figures 11 and 12 are respectively front and side views of the slitting gauge attachment; and

Figure 13 is a detail of the slitting rolls for the machine. I

The machine which is illustrated in the drawings constitutes the preferred form or embodiment of the invention.. It is adapted selectively to carry out or effect o'setting, flanging-and slitting of fpieces of sheet or plate metal and includes a pair of complemental coacting offsetting rolls I4 and I5, a pair of complemental coacting flanging rolls I6 and I1, a pair of complemental coacting slitting rolls I8 and I9, anoffsetting gauge attachment 20, a flanging holddown attachment 2l, a slitting gauge attachment 22 and a common mount 23 for the attach- 'ments The three pairs of rolls are adapted to be selectively used, depending upon the type of work that is to be done by the machine. The offsetting rolls I4 and I5 are adapted to be used with the oifsetting gauge attachment 26 when it is desired to use the machine to form offsets or jogs in metallic work pieces. The flanging rolls top surface 3| and is so designed or constructed that the bottom portion thereof serves as a base for supporting the machine in an upright position on the floor or foundation of the establishment in which the machine is used. The top bottom. arm 2B of the structure 24 and extends upwardly and outwardly at an angle of approximately with respect to the horizontal. The lower end of this shaft is housed within the bottom arm 28 of the structure 24 and the upper end is exlposed and is adapted selectively to carry the rolls I5, I1 and I9. The head 26 carries the upper shaft 21 and overlies the upper or outer end of the lower shaft 25. It is mounted for vertical sliding movement in a guideway 33 in the outer extremity or end of the top arm 29 of the structure 24 and is adapted to be raised'or lowered by way of an upstanding screw shaft 34. This screw shaft, as shown in Figure 1, extends through a vertical internally threaded socket in a Ibracket 35 on the upper portion of the top arm 29 of the structure 24 and has a hand wheel 36 fixed to its upper end. The lower'end of the screw shaft is operatively connected to the ulpper portion of the head 26 so that the screw shaft is rotatable relatively to the head while at the same time the head is connected to the shaft so as to move vertically in connection with such movement of the screw shaft. When the hand wheel 36 is rotated in one direction the head, together with the upper shaft 21, slides downwards towards the outer end o-f the bottom arm 28 of the structure 24 and when the hand Wheel is reversely rotated the head and the upper shaft are caused toV slide upwards in lthe vertically movable head 26 and extends I6 and I1 are adapted to be used together with the anging hold-down attachment 2| when it is desired to use the machine to form downturned marginal anges on circular -or disc-like work pieces. The third set of rolls, that is, the pair of slitting rolls I8 and I9, is adapted to lloe used together with theslitting gauge attachment 22 when it is desired to employ the machine in connection with rectilinear slitting of metallic work pieces. Y v

The machine, with the exception of the three attachments and the common mount 23 therefor, is of conventional or standard construction .and comprises a C-shaped combined housing and supporting structure 24, a lower roll carrying shaft 25, a vertically movable head 26, an upper vis preferably in the form of a one-piece casting.v

The bottom arm 28 of the structure has a flat Vcarry the rolls. I4, I6 and I8.

downwardly and inwards at substantially a 45V angle, as shown in Figure 1.- 'I'he lower or inner end of the upper shaft is adapted selectively to The mechanism for conjointly driving the two shafts 25 and 21 comprises an electric :motor 38 on the upper rear corner of the housing and supporting structure 24, a horizontally extending drive shaft 39 in the upper rear portion of the structure 24, a horizontally extending driven shaft 46 in parallel relation with the drive shaft 39, change speed gearing 4I between the two last mentioned shafts, a horizontally extending driving shaft 42 in the top arm 29 of the structure24, a horizontal driving shaft 43 in the bottom arm 28, clutch controlled gearing 44 for driving the 4drive shaft 42 from the driven shaft 40, a gear train 45 for driving the .driving shaft 43 from the driving shaft 42, a pair of meshing bevel gears 46 and 41 between the front end of the driving shaft-42 and the upper outer end .of the upper roll carrying shaft 21 for driving the latter shaft from the former,l shaft and a pair of meshing bevel gears 48 and 49 between the front end of the driving shaft 43 and the inner end of the roll carrying shaft 25 for driving the latter shaft from said accessi driven shaft 40 is in the form ofpairs .of-meshling gears on the two last mentioned shafts and iscontrolled by a key (not shown) which .is slidably mounted in a horizontal, keyway152 inthe Adriven shaft 4U and 'is adapted, in response `to 'way of mechanism including a hand lever 53.

'Ihe clutch controlled gearing 44 -is inv the .form vof a loose pinion 54 on the rear end of the driven shaft 40 and a fixed gear'55 on the rear end .of the driving shaft 42. The clutch for controlling such gearing comprises a driving' clutch member 56 which is slidablyand drivably mounted Aon the rear extremity of the driven shaft 4l) and a, driven clutch member 51 which is in opposed relation with the clutch .member 56 and is flxed to the pinion 54 of the gearing 44. The clutch member 56 is shifted into and'out of engagement with the clutch memrber 51 by way of mechanism including a hand lever 58 on the front or outer end of the top arm v29 of the housing and supporting structure 24. When it is desired to use the machine the hand lever 53 is manipulated so as to bring into operative position the desired pair of gears of the change speed gearing 4l. Thereafter the electric motor 38 is started and this results in drive of the driven shaft 40 from the drive shaft 39 through the medium .of the change speed gearing 4|. After the motor 38 has reached its normal speed the clutch member 56 is shifted into engagement with the clutch member 51 by manipulation of the hand lever `58. Upon engagement of the two clutch members the -driving shafts 42 and 43 operate conjointly to drive the roll carrying shafts 21 and 25, respectively. The gearing is so designed .thatthe roll carrying shaft 21 is `driven in a clockwise `direction when viewedfrom the front of the machine and 'the lower roll carrying shaft 25 is driven in a counterclockwise direction;

The mount 23 serves as a medium for supporting interchangeably the offsetting gauge attach- -gated1bracketz65 :and is releasably securedin vplace by means .cfa set screw 61 which yextends .through the I.outer side portion of .saidone end :of the last mentioned bracket. AThe central por- .tionzof the bracketA 66 ts against, and is connected to, the .ou-ter or front end of the bottom ment 2U, theflanging hold-downv attachment'Zl and the slitting gauge attachment 22. It is adapted, as hereinafter described more in detail to support any two of the attachments or all three of the attachments while one is in its ofperative or working position, and comprises a pair of guide rods 59 and lEll. These two rods are arranged in parallel relation and extend horizontally. They are disposed at opposite sides of the combined housing and supporting structure 24 and' are in straddled relationwith the bottom arm 28 of said structure. The guide rod 59 is located at the so-called feed side of the machine, that is, the side from which the Work pieces yare fed in connection with offsetting and slitting operations. The rear end of said guide rod 59 is mounted in a horizontal, open-ended socketll in a horizontally elongated member 62, The latter has a fiat upper portion which underlies, and is connected to, the horizontal leg of an angle bracket 63. The vertical leg of such angle bracket; ts against, andis connected to, the connecting part 30 of the housing and supporting structure A24. Set screws 64 are disposed in theaded holesin the outer. side portion of the member B2 and serve releasably to hold Athe rear end of the guide rod 59 in the socket El. The front end of the guide rod 59 fits within a horizontal, openended socket 65 in one end of a horizontally elon-v armlfof the structure 24. The guide rod `59 has ay flat. 681cm the bottom. hereof and is normally rigidly held in -place by way of the set screws 64 and 61. When the set screws are looscned` theguiderod 59 may be removed from the sockets 6l and 65 iby sliding it forwards beyond the bracket 66, The socket V85 in the bracket zisfaxially aligned Withthe socket 6I in the member 62. `The guiderod 60 is located at the so- .called discharge Vside of the machine, thatis, the side4 from which the .work pieces are discharged during offsetting or slitting operations. It is Idisposed :in the same horizontal plane as thev guide` rod 59 and has the rear end thereof vvmounted in a horizontal .open-ended socket 69 ina horizontally elongated member 10. `Such member .has a at upper portion which underlies, and is bolted to, the horizontal leg of `an angle bracket 1|. The vertical leg of the angle bracket 1I fits against, and is--bolted to, the adjacent side of the connecting |part 30 of thecombined Vhousing and supporting structure 24. Set screws 12 extend through threaded holes inthe outer side portion of the ymember 10 tdhold the rear end of the guide rod 6D in `the socket 69. kThe front end of the guide rod is ymounted in a horizontal open-ended socket 13 in the other endof the bracket 6B Aand is releasably secured in place by a set screw 14 which extends through a threaded hole in theouter side portion of the partof the bracket 6B that defines the socket13. Said socket 13' is axially aligned and the same in diameter as, the socket 69. When the set rscrews 12 and 14 are released the guide rod 60 may be removed from the sockets 69 and 13 by sliding it forwards. Said guide rod 60 has a Vat 15 on the bottom thereof.' It is of such length that 'when 'it is in its normal position the front' endor extremity thereofV pro'. jects beyond .the socket 13, as shown in Figure 3 and for a purpose to be explained hereafter.

' The pair of offsetting rolls I4 and l5 and the offsetting gauge attachmentz are employed or utilized when the machine is used lto formv offsets or jogsin sheetor plate metal work pieces. The roll I4 is adapted to be mounted on the inner lower end of the upper shaft 21 and the roll I5 is adapted to be mounted on the outer upper end of the `lower shaft 25, as shown inFigure 5 of the drawings. 45-angle taper in the direction ofthe inner lower end of the shaft 21. The roll l5 isof composite character and comprises'an outer part ld Vand an inner part I5b. The peripheries of these two parts have a 45 angle taper, as shown in J'Figure 5. 4The plane of the periphery ofthe inner part 15b is inset with respect to the plane `of the periphery of the outer part |5a-of the roll l 5 with the result that there is a step |5c between the two parts, When the-two offsetting rolls I4 and l5 are mounted on `the shafts 21 and 25, respectively; the twovshafts are properly adjusted, one The roll I4 is disposed over the inner ypart 15b of the roll l5 directly inwards of the step |5c and the two rolls are so arranged that during drive thereof they coact to effect an offset orjog in any Work piece that is fed between `them from machine'to the discharge and serve `releasably- Theperiphery lofthe roll I4 has a.

the feed side of theY side. The'iofisetting gauge attachment 29 serves as ameans for gauging or determining the position of the oisetor jog with respect tothe edges of the work' pieces that are fed between the rolls I4 and I5.y It is designed and adapted when in .use to be mounted on and carried by the guide rod 59 of the mount 23 and comprises a. two piece cast metal bracket 16 and a roller 11. The bracket consists of a vertically elongated upper piece 18 and a bottom piece 19. The lower end of the upper piece has a downwardly facing groove 39 of semi-circular cross section for receiving the top portion of the guide rod 59. The bottom piece 19 of the bracket is bolted to the lower end of the upper piece 18 and has an upwardly facing vgroove 8l of semicircular cross section for receiving the bottom portion of the guide rod 59. The two grooves 89 and 8| define a cylindrical socket which permits the offsetting gauge attachment 29 to vbe slid longitudinally of the guide rod 59. Two set screws 82 extend through threaded holes in the central portion of the bottom piece 19 of the bracket 15 and serve, when tightened, to lock the bracket against displacement relatively to the guide rod 59.y The upper or inner ends of these two set screws are adapted to engage the flat 68 on the bottom portion `of the guide rod 59, as shown in Figure 6. The upper end of the upper pieceV 18 of the bracket is in the form of a pair of right angle webs, ene of which is on the inside of the bracket and extends lengthwise of the bottom arm '28 of the combined housing and supporting structure 24 and the other of which is joined to, and projects outwardly from, the front margin of the one web and extends at right angles to the guide rod 59. The inner web isprovided with a pair of vertically spaced, inwardly extending, integral ears 83 and these have vertically alignedcircular holes'84. The roller 11 of the attachment 29 has a cylindrical outer periphery and is disposed between the ears 89. It is confined against vertical displacement bythe ears and is rotatably mounted on a vertically extending shaft 85. The ends of the shaft fit within the holes 84 in the ears 83 and are locked in place by way of set screws or any other suitable means. The roller 11 is free to .rotate about the shaft 85 and serves as a stop or guide for the inner edges of the work pieces that are fed between the complemental coacting offsetting rolls I4 and I5 (see Figures 4 and 5). The position of the roller 11 with respect to the offsetting rolls gauges or determines the distance of the oisets or jogs from the inner edges of the work pieces. By adjusting the attachment 2D rearwards on the guide rod 59 the ofi'sets or jogs areinset an appreciable 'distance from the inner edges of the work pieces whereas forward adjustment of the attachment 29 on the guide rod 59 results in the offsets or jogs being inset but a small distance from the inner edges of the work pieces. When it is desired to adjust the attachment 29 the set screws 92 are released and the roller equipped bracket is shifted or slid to the desired position. Thereafter the set screws 82 are tightened so as to lock or nx the attachment 29 in place. The bracket 15 is so designed that the roller 11 projects above and below the operative portions of the oisetting rolls I4 and I5. When the attachment is in its operative position the roller 11 is located on the feed side of the machine but in close proximity to the two offsetting rolls. In order to hold the attachment in an upright position and against tilting in the direction of thebottom arm 29 of the combined housing and supporting structure 24 a'vertically extending cap screw 85 is provided.

This screw extends through an inwardly extending lug 91 on the lowermost ear 83 and is adapted to engage and slide on the flat upper surface of the lower arm 2B of the structure 24. In con'- nection with use of the oisetting rolls I4 and I5 and the offsetting gauge attachment 29 a horizontal hold-down roller fl'isgenerally employed. This roller, as shown in Figure 5, islocated outwards of the two offsetting rolls and is carried by a bracket 89 which is removably. secured to the vertically movable head 29. When it is desired to provide offsets vor jogs in sheet or plate metal work pieces the attachment 29 is adjusted or manipulated to the desired position and themachine is then started by connecting the two offsetting rolls fordrive by the electric motor 39. Thereafter the work pieces are successively fed past the roller 11 of the attachment 29 and between the two rolls I4 and I5. During passage of the pieces past the two rolls the latter, in conjunction with the hold-down roller 98, form the desired osets or jogs therein. The offsetting gauge attachment 29 may be removed either by lwithdrawing the bolts for clamping together the upper and bottom pieces of the bracket 16 or vby loosening the set screws 82 and then sliding the guide rod 59 forwards so as to permit the bracket to be slid rearwards out of engagement therewith. But a single attachment 29 need be employed for the reason that in connection'with anA offsetting operation the direction of rotation of the offsetting rolls is such that the workpiece tends to swing in the direction of the roller 11.

The iianging rolls I6 and I1 and the flanging hold-down attachment'ZI are employed or utilized when the machine is used marginally to flange work pieces in the form of sheet or plate metal discs. The anging roll I6 is adapted to be mounted on the inner lower end of the upper shaft 21 and has in the periphery thereof an annular groove of V-shaped cross section. The wall portions that deiine the groove are disposed at right angles to one another, as shown in Figure 9 and one extends horizontally and the other vertically. The other coacting hanging roll, that is, the roll I1 is adapted to be mounted on the upper outer end ofthe lower shaft 25 and has a Vbead type periphery ofk V-shaped cross section.

The two wall portions of the roll I1 that form the bead are disposed at right angles to one another and are adapted to fitvwithin the annular groove in .the roll I9 in connection with a anging operation, as shown in Figure 9. During a flanging operation thel work piece is placed on the flanging roll I1 and then, in connection with drive of the machine, the roll I6 is fed slowly and progressively toward the roll I1 for'flange forming purposes. In connection with the flanging operation the disc-like work piece rotates due to rotation of the rolls and thus the entire `margin vof the piece is formed into a down-turned `right angle ange at the conclusion of the flanging operation. rI'he attachment 2| serves as a medium for preventing upward deflection or bulging of the central portion of the work piece during flanging of the margin of the piece. It is in the form of a unit and consists Yof a horizontally elongated saddle type bracket 99, a shaft 9|, a pair of sleeves 92 on the shaft 9|, a pair of arms 93 on the sleeves, and a pluralityy of rollers 94 on the arms. The bracket 90 extends transversely across the bottom arm 28 of the combined housin-g and supporting structure l24 and has `.at the ends thereof downwardly facing grooves 95 of semi-circular cross section for slidably receiving the ,upper portions of the guide rods 59 and 69. Two'cap'members 96 underlie, and are bolted to, the ends of the bracket 90 and these have upwardly facing grooves 91 of semicircular' cross section for slidably receiving the bottom` portions of the *two guide rods 59 and 60. Upstanding set screws-96a in the central portions of the cap members 96 'serve when tightened to hold the flanging hold-down attachment 2| against sliding movement with respect to the guide rods 59 and 60. As shown in Figure 8, the upper ends of these set screws are adapted to engage the flats on the bottom portions of the guide rods. The grooves 95'at the ends of the bracket 90 and the upwardly `facing grooves 91 in the cap members 96 define cylindrical, openended sockets which areof slightly greater diameterthan the guiderodsand permit the bracket, in connectionwith use of the attachment 2|, to be slid back and forth on the guide rods into any desired position. The shaft 9| is disposed above, and in parallel relation with, the saddle type bracket 90 'and is supported for vertical adjustment by Way of a pairof eye bolts 98. The latter comprisev eyes and depending threaded Shanks and are located at ,the ends of the bracket 90; 'Ihe eyes of the eye bolts encircle the ends of the shaft 9| andform bearings whereby the shaft 9| is permitted to rock back and forth.

The Shanks` of the eye bolts extend loosely through apertured lugs 99 on the end s of the saddle type bracket 90 and carry upper nuts |00 and lower nuts The upper nuts rest on the upper surfaces of the lugs 99 and the lower nutsV serve as lock nuts.. By loosening the lower nuts |0| and conjointly turning the upper nuts `|00 vertical adjustment of the` shaft 9| may be effected. When the shaft is vertically adjusted to the desired extent tightening of the lower nuts |0| will lock it in place against vertical displacement. The sleeves 92 are mounted in spaced relation on, the central portion of the shaft 9|.and are held against rotation relatively to the shaft by way of keys |02 which are connected to, andv portions of the sleeves'lare provided with forwardly extending, substantially horizontal lugs |05. The arms 93 of the flan-ging hold-down at; tachm'ent 2| normally extend horizontally. They project forwards from the sleeves 92 land have the rear ends thereof positioned on top of the lugs |05. vertically extending bolts |06 extend through aligned holes in the lugs and the rear ends of the arms 93 and form pivots wherebyth'e arms may be'swung to and from one anotl er (see Figure 7). When the bolts |06 are tightened the 'arms are clamped in place. When such bolts are loosened the arms may be swung to or from one another, as previously pointed out.

The outer' ends of the arms 93 are in the form of spindles and serve rotatably to support the rollers 94; Preferably each arm 93 is provided with a series of rollers. Collars '|01 are mounted on the extremefront ends of the arms 93 and serve to hold the rollers in place. When the attachment 2| is in' its operative position, as shown in`Fig A ||8 on, the'bracket 9.0.

wardly extending lug disposed beneath the lug and is pivotally s tion of the work piece being flanged exerts'upwardpressure on the rollersy tending to rock the shaft'9l in a clockwise direction as viewed in Figure 9. In order releasably to lock the shaft 9| against such rocking movement a latch |08 isprovidecl.r This latch comprises a sleeve |09 and an eye bolt |I0. The sleevey is keyed or otherwise xedly secured to `the end of the shaft-9| that overlies the `guide-rod 59,v and has a rear-.'- The eye bolt |`|0 is supported by a, pin ||2 so that'it may be swung back and forth between an operative position wherein it extends upwards `and is substantially .in dead center relation with the sleeve |09 and an inoperative position wherein it extends rear wards `and permits the shaft" 9| to rock in a clockwise direction` as viewed in Figure 9.` The pin` |-.|2 extends through the eye of the eye bolt ||0v and is carried by apair of laterally spacedv upstanding lugs |3 on the end of the saddle type l tion. One end of this. spring is connectedv toa screw Hl on the eye of the eye bolt :i andk `the other end of the spring` is anchored to a screw In `connection with a hanging operation the work piece is properly positionedon the lower ilanging rollll. Thereafterthe shaft 9| is rocked v.in a `counterclock.

wise direction as viewed4 in Figure Qin orderto bring the rollers9l| into contact with the central portion ofthe top surface of .the work piece. As soon as the shaft is so rocked the eye bolt ||0 is swung upwards into its operative position wherein the nut I4 underlies thelug After latching of the shaft 9| in place the machine is4 started and the upper iianging roll I6 is fed downwards by proper turning of the hand wheel 361. During the ilanging operationy the rollers 94 prevent upward'deflection or bulging rof the central v operation` the shaft 9| isprovided with a radially extending hand lever ||9. The Hanging holddown attachment 2| may beadjusted tofunction in connection with a work piece of any particular diameter or thickness by sliding the bracket 90 either backwardsV or forwards on the guide rods 59 and 60, raising or lowering vthe shaft 9|, and shifting'the'sleeves 92.y to or fromV one another on the shaft 9|. When the attachment 2| is not:

in use it-may be slidto the rear ends of the'two Y guide rods k59 and 60, as shown in Figure 1. vThe anging hold-down attachment maybe removed ends of the guide rods.

from the mount 23 by releasing the guide rods 59 and 60, then sliding such rods forwards and thereafter sliding the attachment off the free rear The slitting rolls I8 and I9 and the slitting gauge attachment 22 are employed when it is desired to use the machine to slit work pieces in the form of meetallic sheets or plates. The slitting roll I8 is adapted .to be mounted on Ythe inner lower end of the shaft 21 and the other roll, that is, the slitting rolll I9, is adapted to be mounted on the upper outer end of the shaft As shown in Figure 13, the two rolls are provided with coacting slitting edges and these are adapted, when the rolls are adjusted into slitting position, to overlap and effect slitting of any work piece which is fed between the two rolls. The attachment 22 serves as a medium for gauging or determining the ldistance of the slits from the inner edges of the work pieces.

It is in the form of a unit and comprises aV members |24 and serve to lock the slitting gauge` attachment 22 in its various adjusted positions on the two guide rods. The guide |2| is horizontally elongated and overlies and rests on the bracket |20. It isv preferably in the form of a at a yslight angle tothe cutting edges of the rolls as contradistinguished from truly normal. In order to permit the face plate to :be positioned at the proper acute angle for perfect slitting the `guide |2I haspone end thereof pivotally connected to the subjacent end of the guide bracket |29 by way of a vertically eX- tending pivot pin |29. This pivot pin permits the guide to be lswung back and forth ina horizontal plane and hence makes it possible -properly to adjust the angle of the face plate |22. A

- screw |39 extends through an arcuate slot |3| one-piece casting and has at the front thereof same in length as the guide |2I and has a cen' tral cutout |28 in registry with the'cutout |21 in the flange |26. In connection with a slitting operation the inner or rear edge of the work piece slidesV along, and is guided'by, the face plate |22. The work piece support |23 is'approximatelt7 one-half as long as the face plate |22 and is connected to the end of the face plate |22 that is at the feed side ofthe machine. It

isi in the form of an angle bar and Icomprises a forwardly extending horizontal work supporting leg and a depending vertical-leg. The vertical leg fits against and is screwed or otherwise xedly secured to the lower portion of the adjacent end oi the face plate |22. In connection with a slitting operation the work piece to rbey slit is placed in abutment with the feed end of the face plate |22 and Vis then slid in the direction of the rolls I8 `and I9. During feed of the work piece past the rolls the horizontal leg of the workpiece .support |23 supports the rear margin of the work ving slit.

in the other end of the guide `|2| and serves to lock the guide together with the face plate in place. The arc of the slot |3| is concentric so far as the pivot pin |29'is concerned. The screw |39 extends into a threaded socket in the subjacent end of the guide bracket |23. When it is desired angularly to adjust the face plate the screw |30 is released and the guide is swung until the face plate |22 is adjusted into its proper angular position with respect to the rolls I8 and I9. After proper adjustment of the face lplate the screw |39 is tightened so as rigidly or xedly to secure the guide |2 to the bracket |20. In addition to the parts heretofore described the slitting gauge attachment comprises a. roller |32. This roller is adapted to lcoact with a roller |33 to prevent twisting of the portion of the workpiece that is rearwards of the roll produced slit. During a 'slitting operation the slit'portion of the work piece tends to twist in a counterclockwise direction as viewed .in Figure 12. The rollers |32 and |33 coact to prevent such twisting. The roller |32 is carried Hoy an arm |34 and the roller |33 is carried by an arm |35. The arm |34 is located behind, and extends in parallel relation with, the upstanding ange |25 of the guide I2I. The outer end of said arm |34 overlies the guide rod 60 and is pivotally mounted on a horizontally extending pivot pin |36. The later is fixed to, and vprojects rearwardly from, the flange |26, and permits the arm |34 to swing in a vertical plane for adjustment purposes. The inner end of the arm |34 is provided with a horizontal, forwardly extending shaft |31 and this projects through the -cutouts in the flange |25 and the face plate |22 and carries at its outer end the roller |32. A cap screw |38 extends through a lug |39 on the distal end of the arm |34 and fits within a threaded hole in the guide |2|. rIhis screw constitutes an adjustment whereby the arm may be swung upwards and downwards in order properly to position the roller |32. If thickk work `'pieces are to be slit the arm |34 is swung upwards by proper turning of the screw |38 and if thin work pieces are to be slit the arm |34 is swung downwards by reverse turning of the screw. When the screw is properly adjusted or set it holds the arm |34 against swinging movement and hence locks' the roller |32 in place. The roller |32, as shown in Figure 12, is adapted to overlie the rear margin of the Work piece be- The roller equipped arm |35 is in the nature of a circular complemental attachment for use in connection with the main slitting gauge attachment 22,.and' has at one end thereof 'a socket |40 for receiving the front extremity of the guide rod 69, that is, the end portion of the guide rody that projects forwards of the bracket B6. The other end of the arm |35 embodies a horizontal, rearwardlyextending pivot pin I4| vforrotatably supporting the roller |33. It also embodies a rearwardly extending lug |42 and this overlies the central -portion ofthe bracket opposite. directions; and amount arranged .and

66l and carries a dependingl abutment .screw |43. The head of such screw rests on the central Aportion of the bracket -66 as shownin Figure 11 and the outer lr free end of the shank of the screw fits within a thleadedi'hole in the lug.

|42 and carries a lug or jam nut |44. By ad'-` justing the screw |43 the roller |33 may beraised or lowered into its proper Work piece engaging position. The roller |33 is adapted .to underlie the front margin of the slit portion `.of the `Work piece. A collar |45 is removably lconnected to thefront extremity lof Ithe .guide rod 6.0' and serves to prevent forward displacement of the arm |35 when the latter is in its operative lposition. When the machine is not to be used for a slitting operation. the roller equipped `arm |35 is removed. Removal `of the arm ris Veffected lay removing the collar `|45 and .then sliding the arm |35 off the front end or extremity of the guide rod 60. i

When the machine is `not in use the three attachments 20, 2| and `22cmay be arranged on the mount 23 .as shown in Figure 1 .or they may be arranged in any other desired manner. In Figure 1 the slitting gauge attachment .22 is shown on the rear ends ofthe guide rods l59 and 60, the anging hold-down attachment 22 `is shown on the central portions fof the two Aguide rods ,and the offsetting gauge attachment 20 is shown on the frontend of the guide rod 59.' With the attachments so arranged -theoffsetting gauge attachment may be used without disturbing the two other attachments. .Should it be desired to use the 'fflanging hold-down attachment 2| the offsetting gauge attachment` 20 is removed and the attachment 2| is slid forwards and properly adjusted to render it operative. that it is desired to use the machine for Work piece slitting purposes the offsetting gauge attachment and the anging hold-down attachment are removed and the attachment 22 is slid forwards and then properly adjusted. Inconnection with use of the :machine for slitting purposes the supplemental slitting attachment in the form of the Yroller equipped arm |35 is mounted In the event` on the front end or extremity of the guide rod 60. By reason of the fact that the `machine includes the mount 23, the `three attachments 20, 2r| and 22 rmay be employedinterchangeably and it is possible quickly and readily :to one of the attachments for use.

The herein described metal Working machine terized Yby facility of mounting or adjustment ofthe Various attachments.

position any The `invention is not to be understood as restricted .to the `details set forth since these may be modified within thescope of the appended claims without departing from the spirit and scope of the invention.

Having thus described the invention what We claim .as :new anddesire to secure by Letters Patent is:

1. A metal working machine comprising a C- shaped combined housing and supporting structure, a pair .of shafts -mounted one at the outer end of the bottom arm of the structure and the other for vertical adjustment at the outer end of the top arm of said structure, and adapted selectively to support different pairs of complemental coacting rolls for use, respectively, with coacting attachments, power means including gearing in the structure for conjointly driving the shafts in designed vinterchangealcrly aswell as collectively to support said attachments r`for horizontal Vad- .l

justment to .and from theshafts, and embodying a pair of horizontal guide rods extending longitud-inally along, 4and disposed slightly outwards of, one` of the arms .of the structure, a pair of brackets connected to, and extending outwards: in opposite directions from, .the outer end of the,

one arm and serving to support the adjacent ends of the rods, andapairof brackets adjacent the inner end of .the one arm and .serving to support the other -ends of the rods.

2. A metalworking machine comprising a C.- shaped combined housing.andsupporting structure, a pair v-of shafts mounted one at the outer end .offthe bottom arm of the structureand the other at the outer end of the top 'arm of said.

structure, and adapted 'selectively to support a pair of complemental coacting offsetting rolls, Va pair .offcomplemental coacting flanging rolls, and a pair 'of complemental coacting slitting rolls for use, respectively, Withan offsetting gauge attachment, a i'langing hold-down attachment, and .a slitting gauge attachment, power means including Vgearing -in thestructure for Yconjointly driving the shafts in .opposi-te directions, and a mount,

adapted "interchangeably, as well .as collectively to support ,said `attachments for horizontal adjustment .to vand Afrom .the shafts .andembodying a pair of `laterally `spacedhorizontal guide rods :at

opposite sides of the bottom arm of the structure,

a 4pair .of brackets connected to, and extending outwards in opposite .directions from, the outer end of saidlbottom arm and serving to support the adjacent endsof the rods, and a pair of brackets adjacent the inner end of said bottom arm and serving to vsupport the other ends of the rods.

.3. A metal working lmachine comprising a C- shaped combined housing .and supporting structure .having socket Aequipped bracketsv ,mountedl thereon, a pair of shafts mounted one at thev outer end of the bottom arm of the structure and the other forlvertical adjustment at the outer end i of the -top arm 0f said structure,v and adapted selectively to support different pairs of complemental coacting Vrolls for use, respectively, with coacting attachments, power driven mechanism including gearing `inthe structure for conjointly driving the two shafts in opposite directions, and a mount designed and adapted interchangeably and adjustably to support said :attachments :and

, ture and the other' for vertical adjustment at the outer end of the top arm of said structure and adapted to `support a pair of complemental coacting slitting rolls, and powerdriven mecha` nism for conjointly drivingthe shafts in opposite directions,` of Aa pair yof horizontal guide rods mounted on the Vstructure and positioned along andpoutwardsof .opposite sides of said bottom arm, and a slittinggauge attachment comprising afhorizontally--elongated "bracket .overlying and extending transversely across said bottom arm and having the ends thereof slidably mounted on the rods so that it is shiftable to and from the shafts, and a guide mounted on the bracket for angular adjustment in a horizontal plane and provided withy guide means for supporting and rectilinearly guiding work *pieces during feed thereof between the rolls in connection with slitting thereof.

5. In a metal working machine of the character described, the combination with a C-shaped supporting structure, a pair of shafts mounted one at the outenend of the bottom arm of the structure and the other for vertical adjustment at the outer end of the top arm of said structure and adapted to support a pair of complemental coacting slitting rolls, and power driven mechanism for conjointly driving the shafts in opposite directions,- of a pair of horizontal guide rods mounted on the structure and positioned along and outwards of opposite sides of said bottom arm, and -a slitting gauge attachment comprising a horizontally elongated bracket overlying and extending transversely across said bottom arm and having the ends thereof slidably mounted on the rods so that it is shiftable to and from the shafts,' a horizontally elongated guide overlying the bracket and pivotally connected thereto so that it is capable of being swung in a horizontal plane and provided with means for supporting and rectilinearly guiding work pieces during feed thereof between the rolls in connection with slitting thereof, and a bolt and arcuate slot connection between the guide and the bracket for releasably locking the latter together.

6. A metal working machine ofthe character described, comprising a C-shaped supporting structure, a pair of shafts'mounted one at the outer end of the bottom arm of the structure and the other at the outer end of the top arm of said structure and adapted to support a pair of complemental coacting /slitting rolls, power driven mechanism for conjointly driving the shafts in opposite directions, and a slitting gauge attachment embodying a horizontally elongated bracket overlying and extending transversely across said bottom arm and mounted so that it is shiftable to and from the shafts, and a horizontally elongated guide extending over and lengthing and rectilinearly guiding work pieces during feed thereof between the rolls in connection with slitting, having one end thereof pivotally connected to the bracket so that it may be adjusted `angularly in a horizontal plane in order to position the guide means so that it operates in connection with slitting so-to guide the work pieces that the slits are truly parallel to the edges in contact with said guide means, and a bolt and arcuate slot connection between the guide and i coacting slitting rolls, and power driven mechaarm, and a slittinggauge attachment comprising a horizontally elongated bracket overlying and extending transversely across said bottom arm and having the ends thereof slidably mounted on the rods so that it is shiftable to and from the shafts, a guide mounted on the bracket for angular adjustment in a horizontal plane and 1 provided with guide means for supporting and 9. A metal working machine of the character described, comprising a C-shaped supporting structure, a pair of shafts mounted one at the outer end of the bottom armof the structure and the other at the outer end of the top arm of said structure and adapted to support a pair Wise of the bracket, provided with guide means for supporting and rectilinearly guiding work pieces during feed thereof between the rolls in connection with slitting, and connected to the bracket so that it may be adjusted angularly in a horizontal plane in order to position the guide means so that it operates in connection with slitting so to guide the work `pieces that the slits are truly parallel to the edges in contact with said guide means.

'7. A metal working machine of the character described, comprising a C-shaped supporting structure, a pair of shafts mounted one at the outer end of the bottom arm of the structure and the other at the outer end of the top arm of said structure and adapted to support a pair of complemental coacting slitting rolls, power driven mechanism for conjointly driving the shafts in opposite directions, and a slitting gauge attachment embodying a horizontally elongated bracket overlying and extending transversely across said bottom arm and mounted so that it is shiftable to and from the shafts, a horizontally elongated of complemental coacting slitting rolls, power driven mechanism for conjointly driving the shafts in opposite directions, and a slitting gauge attachment embodying a, horizontally elongated Vvbracket overlying and extending transversely across said bottom arm and mounted so that it is shiftable to and from the shafts, a horizontally elongated guide extending over and lengthwise of the bracket, provided with guide means for supporting and rectilinearly guiding work pieces during feed thereof between the rolls in connection with slitting, and connectedto the bracket so that it may be adjusted angularly in` a horizontal plane in order to position the guide meansv so that it operates in connection with slitting so to guide the work pieces thatythe slits are truly parallel to the edges in contact with said guide means, and a roller disposed adjacent said guide means, mounted `on the guide so that it is rotatable about a horizontal axis and is also vertically adjustable, and adapted to ,engage the top surfaces of the Workpieces during slitting thereof.

JOHN J. MCGLONE. ROBERT I. ANDERSON. 

